Emergency attachment for railway-cars.



G. A. MARTINEZ.

, EMERGENCY ATTACHMENT FOR RAILWAY CARS.

APPLICATION FILED NOV. 20, 190;).

Patented-July 11, 1911.

2 SHEETS-SHBET 1.

WITNESSES.

INVENTEIFI ZEIY 'A TUHNEYS c.- A. MARTINEZ. EMERGENCY ATTACHMENT FOR RAILWAY (JARS.

' .APPLIOATION FILED NOV. 20 1909 Patentd July 11', 1911.

2 SHEETS-SHEET 2.

VIII/1J7! IIIA EINVENTEIH Fig. H1

WITNESSES! ATTORNEYS CRISTOBAL A. MARTINEZ, OF HACIENDA DE HOBNOS, MEXICO.

' EMERGENCY ATTACHMENT FOR RAILWAY-CARS.

Application filed November 20, 1909. Serial No. 529,013.

Specification of Letters ma.

Patented July To all whom it may concern:

Be it known that I, CRISTQBAL A. Man- 'rixnz, a citizen of Mexico, residingat Hacienda de Hornos, Stateof Coahuila, Mexico, have invented certain new and useful Improvements in Emergency Attachments for Railway-Cars, of which the following is a specification.

'The invention relates to such improvements and consists of the novel construction and combination of parts hereinafter described and subsequently claimed.

, Reference may be-had to the accompanying drawings, and the reference, characters marked thereon, which form a part of this specification. Similar characters refer to similar parts'in the several figures therein.

The object of the invention is to automatically set the brakes of a railway-car provided with an air-brake system, Whenever the car is,accidentally derailed.

The inventionconsists of an emergency attachment for railway-cars provided with an air-brake system con'iprising an air-receptacle connected with the supply-pipe of the air-brake system, and having a breakable wall-section and a movable member located ust above and in close proximlty to one of the car-supporting rails, and adapted when the car is derailed to be forced by the rail into engagement with the breakable section with suflicient force to break the same and afford 'a release-openingfor the compressedair within the air-supply pipe, as Will be hereinafter more fully described and sub-' sequently pointed out in the claims. I

Figure l of the drawings is a view in side elevation of'a car-truck provided with the improved attachment. Fig. 2 is a diagrammatic plan view showing the relative posi-- tions of four attachments and their connections with the main air-supply pipe .of the air-brake system. Fig. 3 is a top plan View of one of the attachments detached. Fig. 4 is a side elevation made partly in section of the same. Figs. 5' and 6 are vertical crosssectional views of the car-supporting rails,

showing the relative= positions of the rails. and attachments. 4

tral, longitudinal section of the same. Fig.

Fig. Tis a vertical, cen- S is a central, vertical section taken on the broken line 8-8 in Fig. 4, wi -h a portion of the 'parts brokep away. Figs?) is a verti- R- cal sectlon taken on the brokenv l1ne 9 m Fig. 4. Fig. 10 is an end elevation of the and '10, 'are drawn upon an enlarged scale.

This emergency attachment is adapted to be applied to any vehicle designed to-travel 'on track-rziils and provided with an air brake system. I have shown it applied, in Figs. 1 and 2, .to the truck ofa railway-car.

The .attachment comprises an air-receptacle or box, 1, secured to the equalizing bar, 2-, of the truck by means of the hanger, 3, bolted to such bar at its upper end, and at its lower end to the bracket, 4, projecting laterally from the box',1, as seen in Figs. 1, 8, 9 and 10. \Vhen desired there may be a similar' box or attachment secured to the truck in the neighborhood of each track-wheel, as

shown in- Fig. 2. V The line, 5, shown in air-supply pipe of the brake-system, and this pipe is-connec'ted by a pipe, line, 6, with each one of the air-boxes, 1, so that the boxes are normally filled with compressed air, be- .ing in connection with the main air-pipe. The wheels, 8,.of the truck are shown resting upon the track-rail 9., The pipes, 6, are two of them shown connected up inFig. 1, with the main air-supply pipe shown in that figure. v

Each air-box is provided with a movable member comprising a' cross-head, 10, providedwith upright plunger-s, 12, passing through the bottom wall, 13, of the-box, and in close proximity with the glass plates, '14, as shown in Figs. 7- and 9. i The thimbles, 15, inserted in the upper part shown in-Fig.-3. Figs. 3, 4, 5, 6, 7', 8, 9

Fig. 2, is the main.

wall of the box are provided with an in- The plungers, 12 are each provided'with a conical valve, 18, adapted to tightly close the openings in the bottom wall of the box through which the plungers enter the box the valves 18, normally support the respective plungers .12, each with its inner end in close proximity to the glass 14.

The two plungers are shown connected by a common cross-head, 10, in Figs. 4 and 7.

It is obvious that a singleplunger with a T-shaped head would in mostcases serve the same purpose as the two plungers and the connecting cross-head, it only being necessary that the head of the plunger or plungers should be sufficiently extensive to engage the subjacent track-rail, 9, in

case the car-wheel neighboring such plunger should accidentally be derailed, in which case the plunger would be pushed inwardly against the glass with sufiicient force to break it, and thereby permit the escape of compressed air from the box, thus acting automatically upon the air-brake system to set the brakes. The broken glass can afterward be readily replaced by an unbroken glass, and the box thus restored to operative condition for future use as an emergency attachment.

It. is obvious that any breakable section may be substituted for the glass section.

It is also obvious that the invention is not limited to the exact manner shown for releasing the compressed air'ft'rom the attachment box, it only being essential that the contact of the movable member-With the rail should automatically release air from the box, by breakage of the breakable section.

When desired a depending bar or slab, 20, may be provided to protect the attachment fronrinjury by any obstacle accidentally placed upon the track-rail, the depending bar serving to remove such obstacle and prevent contact of the box with the obstacle.

What I claim as new and desire to secure by Letters Patent is 1. An emergency attachment, for railwaycars provided with an air-brake system, consisting of a compressed-air receptacle having a breakable wall-section and connected with the main supply-pipe of the airbrake system; a plunger movable through the wall of the air-receptaclc to and from the breakable section, provided with a cross-head on its outer end and means for thereto.

2. An emergency attachment, for railway-cars provided with an air-brake system, consisting of a compressed-air receptacle having a breakable and detachable wall-section and connected with the main supply-- pipe of the air-brake system; and amovable member normally located vertically above the car-supporting rail, and in close proximity thereto, adapted to be forcetlein-to breaking engagement with the breakable section by the rail when the car-wheels leavehe rail.

3. An emergency attachment, formrailway-cars provided withjan air-brake system, consisting of a compressed-air receptacle having a breakable'wall-sectioir-and connected with the main supply-pipe of the airbrake system; a movable member normally located vertically above the car-sup porting rail, and in close proximity thereto, adapted to be forced into ment with the breakable section by the rail breaking erigagei when the' car-Wheels leave the rail; and a rigid and depending guard located inadvance of the movable member.

In testimony whereof, I have hereunto set my hand this 8 day of N member 3 1909.

CRISTOBAL A. MARTINEZ.

Witnesses:

C. G. GRosvnNoR, JOHN SHERMAN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner. of Patents, Washington, D. C. i M 

